MATLAB: Format axes Tick Labels in log scale

axisformatlabelslogtick

Dear all, an annoying issue when plotting on log scales, is apparently not being able to control the format of axis tick labels.

For example: given XTick = [0.1,1,10,30];

I want to manually set my own labels, e.g. XTickLabels = num2str(10^-1, 10^0, 10^1, 10^-1].

How can I format XTickLabels so that I display tick labels as powers of ten (i.e. base^{exponent} in latex interpreter)?

Right now MATLAB either omits the last label if XTickLabelModel is 'auto' or can display strings of the type '10^X' or can show only numbers as decimals (i.e. '0.1, 1, 10, 0.1').

Is there a way to control directly the format of axis tick labels, or I have to work it around using a text(-) object and switching XTickLabels off?

Thank you in advance for your help. Maurizio

Best Answer

XTickLabels = cellstr(num2str(round(log10(XTick(:))), '10^%d'));

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set(gca,'xtick',[]) set(gca,'ytick',[])

MATLAB: How to label the y-axes with a percent sign (%) in MATLAB

This can be done after plotting your figure. The code given below shows an example on how to get the current axis labels and format them into a string with the percent symbol. Once this is done it sets the axis tick labels back to the figure axis.

surf(peaks)
% lines 6,7,8 get the axis labels. 
% lines 10,11,12 create the respective Percent vectors 
% lines 14,15,16 concatenate the vectors
xticks = [get(gca,'xtick')]'; % Gets the axis tick labels.
yticks = [get(gca,'ytick')]'; % There is a transpose operation here.
zticks = [get(gca,'ztick')]'; % 
percentsx = repmat('%', length(xticks),1);  %  makes a matrix
percentsy = repmat('%', length(yticks),1);  %  equal to the size
percentsz = repmat('%', length(zticks),1);  %  of the number of ticks
xticklabel = [num2str(xticks) percentsx];
yticklabel = [num2str(yticks) percentsy]; % concatenates the tick labels 
zticklabel = [num2str(zticks) percentsz]; %with percentages
set(gca,'xticklabel',xticklabel) 
set(gca,'yticklabel',yticklabel)% Sets tick labels back on the Axis
set(gca,'zticklabel',zticklabel)
% Sets them back on the Axis

Best Answer

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MATLAB: Deletting X and Y axes ticks

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